如何在 Swift 中获取两个日期之间的天数？ [复制]

Posted 2023-03-12

【中文标题】如何在 Swift 中获取两个日期之间的天数？ [复制]

【英文标题】：How to get an array of days between two dates in Swift? [duplicate]

【发布时间】：2018-03-20 14:48:08

【问题描述】：

假设我们有一个函数签名：

func datesRange(from: Date, to: Date) -> [Date]

它应该采用from 日期和to 日期实例，并返回一个包含其参数之间的日期（天）的数组。如何实现？

【问题讨论】：

相关：Swift: Print all dates between two NSDate().

【参考方案1】：

你可以这样实现它：

func datesRange(from: Date, to: Date) -> [Date] 
    // in case of the "from" date is more than "to" date,
    // it should returns an empty array:
    if from > to  return [Date]() 

    var tempDate = from
    var array = [tempDate]

    while tempDate < to 
        tempDate = Calendar.current.date(byAdding: .day, value: 1, to: tempDate)!
        array.append(tempDate)
    

    return array

用法：

let today = Date()
let nextFiveDays = Calendar.current.date(byAdding: .day, value: 5, to: today)!

let myRange = datesRange(from: today, to: nextFiveDays)
print(myRange)
/*
[2018-03-20 14:46:03 +0000,
 2018-03-21 14:46:03 +0000,
 2018-03-22 14:46:03 +0000,
 2018-03-23 14:46:03 +0000,
 2018-03-24 14:46:03 +0000,
 2018-03-25 14:46:03 +0000]
*/